Fluid cooled roll



July lz, 1932 I A. L. HARRINGTON 1,867,148

4 FLUID COOLED ROLL Filed Aug, 13. 1930 3 shets-sheet 1 July 12, 1932-AA L. HARRINGTON .1,867,143

FLUID cooLED RoLL Filed Aug. 13, 1930 kg 5 Sheets-Sheet 2 INVENTOR July12', 19372- A. L. HARRINGTON 1,867,148

Filed Aug. 15, 1930 3 sheS-sheet 3 Patentecl July 12, 1932 UNrrE'Ds'rATEi-s 'PAraNr ALFREn LHARRINGTON, OF ROssLYN FAM/is, PENNSYLVNIA.AssIGNoB .To m'r'rs- BURGH rLA'rn GLAss COMPANY, A CORPORATION OFPENNsYLVNIA FLUID cooLED ROLL 'Appucafin 'fiied August 18, men. sex-m1No. 474,898.

The invention relatesto fluid cooled rolls for use in glass rollingapparatus. The in- Vention has for its principa-l objects the pro-Vision of an improved roll in which the tendency of the roll to Warpunder the severe heat conditions encountered in forming glass sheets inan intermittent rolling operation is reduced to a minimum. Certainembodiments of the invention are illustrated in the accompanyingdrawings, wherein:

Figure 1 is an assembly View in Vertical cross section taken on the lineI-I of Fig. 2 showing the roll in position of service. Fig. 2 is apartial front elevation and partial section on the line II-I of Fig. 1.Figs. 3`

and 4 are enlarged detail Sections through the roll, Fig. 8 being asection on the line III-III of Fig. 4, and Fig. 4 being a section on theline IV-IV of Fig. 3. Figs, 6 and 7 illustrate a modification, Figs. 5and 6 being Sections, and Fig. 7 being a partial plan view. Figs. 8 and9 are sections illustrating another modification. And Figs. 10 and 11are sections illustrating still another modification.

Figure 1 illustrates the application of the roll to an intermittentrolling apparatus, the glass sheet 1 being formed between the rolls 2and 3, the latter of which being the structure to which the presentinvention is directed. The rolls are suitably driven, the roll 2 beingsupported upon the driven rolls 4 and 5. The body of glass 6 which formsthe sheet is teemed into a pocket between the two rolls. One of thedifiiculties encountered in a rolling'operation of this kind is that ofmaintaining the roll 3 at a proper temperatureto prevent warping due tothe fact that the application of a large body of molten glass on oneside of the roll tends to distort it. As a result, the roll bows to acertain extent and the glass sheet which is formed is of uneventhickness. Due to this fact, the sheet must be cast somewhat thickerthan would otherwise be the case and more grindent invention is designedto overcome this difiiculty and to reduce any bowing or warping to aminimum.

The roll 3 preferably consists of a series lthe parts to be joined Withcopper prelimine ary to brlnging them to a temperature nec'es-` ing isrequired to bring the twoV faces of the sheets to parallelismthroughout. The pres-.

of annular discs 7 brazed together at their side faces so as to formarcylinder through which a circulation of Water isprovidedby means ofthe swivels 8, 8 connecte'rlto suitable water supply pipes 9. The'brazing is preferably done by the use of copper as' 'a bra'zingmaterial in a hydrogen `furnace,the copper being supplied in the form of.thin diss 'between the parts to be join'e'd', or by plating sary forbrazing in a hydro'genfurnace; The discs are each preferably reduced inthickness at their 'outer edges, as indicat'ed Fig.,3 so that a seriesof circumfere'ntial'slots '10 `'are provided. These slots are preferablyof such small Awidth that the molte'n glass will hot flow into andfillthem during the rolling' 'op'- eration. This width 'may Vary :somewhatbut is preferabl'y about one one-hundredthsof an inch. By thisexpedient,l 'any warping-'due to the roll being overheated on onesid'eisreduced to a minimum since eaehdisc can expand longitudinally ofthe roll without aifecting the other discs. In orderrto still-further v-'overcome any tendencyrto Warp,V the surface' of the roll isprovi'oledwithV the series -of ligitudinal slots 11 (Fig. 4). lThe 'surface of theroll is thusl divided into a pluralit of rectangles and each rectan'glarsection a's thus ;provided is free to `Vepand without i affecting anyother section.v These longiturdinal slots 'are also preferably aboutone'onhundredths of an inch in width. "They eX- tend inwardfrom thesurface of theroll to about the same depth as 7+the slots 105. as indi'-cate'd in Fi'gs'. 3 and .'4. x: Figs. 51, 6,- and 7 illustrate` amo'dififc'ation in which the rolling face of the' roll is made up of aplurality of pins or pegs llsquare in cross section 'an'dprovidedwithreduced ends 13 whichfit into socket's 14 inthe cylinder 15. ThepinsV are arranged so that their side walls are spaced away from eachV.(Jtln'er;.thu's providing the circuniferential groovesf161andlongitudinalgrooves '17 corresponding tothe grooves 10'and11 of theconstruction of Figs. 1 to 4. The ends 13.of the may0 ble I shrunk inthe sockets 14 or maybe pressed i F such sockets. i w

Figs. 8 and 9 illustrate another modification in which the roll is anintegral structure. This roll, as in the other forms of constru^- tionis provided with two sets of slots 18 and 19, such slots being formed bysaws or 4;. and ,these rings'are also provided with longit'udinal slots23' corresponding to the vslots-.11 in the construction of Figs. 1 toll.

l Whatzlclaim is:

-'1.-A` glass forming or sizing'roll with a Cooling passageextendingthrough its center longitudinally thereof and having itssurface provided with two series of slots one of which extendscircumferentially .of thefroll at spaced intervals and the other .ofwhich extends longitudinally .of therolla't spacedintervalstransverselyV of the first series, said A slots being ofrelatively small width' so that and fill '-them. 50

the glass will'not flowinto and fill them.

centrally located coolingpassage comprising a series of annulardiscsarranged in series .side by side and' brazed'together, the. surface i.of said roll beingfprovided with a series of ,spaced slotsextendinglongitudinally thereofv andofV relatively small width so that the glasswill Anot'fiow into'and fill them. V 1 3. A glass forming or sizingVroll having a centrally located cooling passage comprising ,a series ofannular discs Aarranged in series side byside and vlorazed together,said V roll havlngV its surface provided with two g series of slots onevof vwhich extendscircum- 2. Aglass forming` or sizlng roll havmg aseries of spaced slots of small width extending longitudinally of theroll.

6. 'Incombinatiom an integral metal cylinder, and means for circulatinga Cooling fiuid therethrough, said cylinder having its surface Vprovidedwith two series of slots one of which extends circumferen'tially of theo roll at spaced intervals and the other of which extends longitudinallyof the roll at .spaced intervals transversely of the first series, saidslots being Aof relatively small width so that the glass will not flowinto and fill them.

In testimony whereof, I have hereunto subscribed my name this 4th day ofAugust,

ALFRED L. HARRINGTON.

ferentially of the roll at spaced intervals and i the other of whicheXtends longitudinally of theroll at spaced intervals transversely. ofthefirst series, 1said slots being of relatively small width so that theglass will not flow into 4. A glass formingor sizing roll havingcentrally located coolingpassage comprising la series of annulardiscsr'arranged inseries side'byiside and brazed together, the surfaceofsald roll being provided with a v'series of spaced slots: extendin'gcircumferentially thereofv and of relatively small width so that i theglass ;will not flow into and fill them.V

f 5. AIncombination in a roll, an inner supporting cylinder, means forcirculating a CoolingV fluid through thecylinder, and a jaclretsecurefdv to the cylinder and comprising f Q a pluralitygof discsc'ontactin g with each other at their inner edges and brazedtogether,but

spaced'; apart slightly at theirfi peripheries,

each of said discs being provided with a

